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Michael J. Zwiener, FSA, EA, MAAA

Consulting Actuary
St. Louis, MO, US

Tel: +1 314 2313031

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Professional Designations

  • Fellow, Society of Actuaries
  • Enrolled Actuary, ERISA
  • Member, American Academy of Actuaries


  • BS, Integrated Studies, University of Nebraska

Current Responsibility

Mike is a principal with Milliman’s St. Louis office. He joined the firm in 1985.


Mike’s area of expertise is in the design and funding of qualified and nonqualified retirement programs. His defined benefit experience includes directing actuarial valuations for both funding and accounting requirements primarily for multiemployer and governmental plan sponsors.

Examples of recent multiemployer consulting assignments include:

  • Design, implementation, and monitoring of funding improvement and rehabilitation plans
  • Spinoff from multiemployer plan to single employer plans
  • Assist multiemployer funds with mass withdrawal, both with and without plan termination
  • Determine assessments for an employer experiencing a series of partial withdrawals from a multiemployer plan


Mike has spoken before the Enrolled Actuaries meeting on matters of pension funding and at Milliman’s annual firm-wide training sessions.


  • Member of Milliman’s Strategic Planning Group for Multiemployer Plans
  • Work at Milliman

    • “I was offered a chance to come in, shake things up, create something."
    Work at Milliman